HealthCareMagic is now Ask A Doctor - 24x7 | https://www.askadoctor24x7.com

question-icon

Phenomenon Of Hexagons Appearing In The Light After Waking From Sleep. Why Does This Happen?

default
Posted on Thu, 5 Jul 2012
Question: On occasion, when I awaken in a dimly lighted room, I see a large number of hexagons along with the real image in my field of view. With lights on the hexagons disappear and this phenomenon seems to be related only to waking from sleep. Can you tell me what this is. An internet search indicates that others experience this but I am unable to find an explanation.
doctor
Answered by Dr. N K Mishra (3 hours later)
Hello,

Welcome to WWW.WWWW.WW Thank you for posting the query.


Coloured halos/hexagons around a yellow light suggest a transient rise of intraocular pressure/tension, but that is unlikely in your case because such rise is more in the evening after the sunset. Still it will be advisable to have a complete ocular examination to rule out any traces of Glaucoma. That will include Intraocular pressure measurement and fundus examination for Disc appearance. In case of any suggestive findings then further investigations like perimetry will be required.

As a second possibility effects of corneal epithelial defects can be taken care of by instillation of lubricant eye drops.

Please get back to me if you have further doubts and queries.

Regards,
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
doctor
Answered by
Dr.
Dr. N K Mishra

Ophthalmologist

Practicing since :1977

Answered : 1297 Questions

Ask me a question
premium_optimized

The User accepted the expert's answer

Ask an Ophthalmologist
Share on

Get personalised answers from verified doctor in minutes across 80+ specialties

159 Doctors Online

By proceeding, I accept the Terms and Conditions

HCM Blog Instant Access to Doctors
HCM Blog Questions Answered
HCM Blog Satisfaction
backtotop2
Phenomenon Of Hexagons Appearing In The Light After Waking From Sleep. Why Does This Happen?

Hello,

Welcome to WWW.WWWW.WW Thank you for posting the query.


Coloured halos/hexagons around a yellow light suggest a transient rise of intraocular pressure/tension, but that is unlikely in your case because such rise is more in the evening after the sunset. Still it will be advisable to have a complete ocular examination to rule out any traces of Glaucoma. That will include Intraocular pressure measurement and fundus examination for Disc appearance. In case of any suggestive findings then further investigations like perimetry will be required.

As a second possibility effects of corneal epithelial defects can be taken care of by instillation of lubricant eye drops.

Please get back to me if you have further doubts and queries.

Regards,